–I tried many times but I still failed in the experiment--Don’t be discouragedand t

问题补充：

–I tried many times, but I still failed in the experiment.

--Don’t be discouraged. and the problem will be settled.

A. Having a little effort

B. There is a little effort

C. If you have a bit effort

D. A bit more effort

答案：

A. Having a little effort

B. There is a little effort

C. If you have a bit effort

(答案→)D. A bit more effort

解析： 略

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